Bob Katter's son Rob Katter has lost the state leadership of the party bearing his name.

The shakeup follows the defection of Liberal National Party MP Ray Hopper to Katter's Australian Party on the weekend.

Rob Katter, who had been state leader when the party had just two MPs, told Queensland Parliament on Thursday Mr Hopper was the new state parliamentary leader.

Mr Katter said he would now be the parliamentary secretary, while Shane Knuth would be the whip.

Party whips are traditionally in charge of ensuring MPs attend votes and display party discipline, but there are only three Katter's Australian Party members in Queensland Parliament.

Mr Katter said he welcomed Mr Hopper, the member for Condamine, to take over the leadership position.

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"Ray is a very experienced politician and will be a great leader of Katter's Australian Party," Mr Katter said in a statement.

"Ray has shown true courage and determination in the last week and over his time representing his electorate."

Mr Hopper said he thanked his colleagues for their support and he was "now focused on holding this shambolic government to account".

Mr Hopper said he would spend the parliamentary break trying to build the KAP team across Queensland and travelling around the state "to hear from Queenslanders who have been let down by a government that promised so much and delivered so little".